Ace the Certified Ophthalmic Assistant Exam 2025 – Eye-Opening Success Awaits!

The correct response highlights that the zonular fibers, which are crucial in supporting the lens of the eye, are indeed attached to the ciliary body. The ciliary body plays an essential role in the accommodation of the lens, allowing for changes in shape to focus on objects at varying distances. The zonular fibers, also known as zonules or zonular ligaments, connect the ciliary body to the lens and are integral to the functioning of the eye's focusing mechanism. When the ciliary body contracts, it releases tension on these fibers, permitting the lens to become more rounded for near vision.

In the context of the other options, while the iris and medial rectus are important structures of the eye, they do not have a direct role in supporting the lens or facilitating the adjustment of its shape. The stroma, although part of the corneal structure, is unrelated to the lens and its support system. Thus, the connection between the zonular fibers and the ciliary body is crucial for understanding how the eye accommodates and maintains clear vision.